1136972771 has 32 divisors (see below), whose sum is σ = 1311178752. Its totient is φ = 976500000.

The previous prime is 1136972747. The next prime is 1136972779. The reversal of 1136972771 is 1772796311.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1136972771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136972779) by changing a digit.

It is a Zeisel number, with parameters (2, 9).

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3655706 + ... + 3656016.

It is an arithmetic number, because the mean of its divisors is an integer number (40974336).

Almost surely, 2^1136972771 is an apocalyptic number.

1136972771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1136972771 is a deficient number, since it is larger than the sum of its proper divisors (174205981).

1136972771 is a wasteful number, since it uses less digits than its factorization.

1136972771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its digits is 111132, while the sum is 44.

The square root of 1136972771 is about 33719.0268394567. The cubic root of 1136972771 is about 1043.7184356764.

The spelling of 1136972771 in words is "one billion, one hundred thirty-six million, nine hundred seventy-two thousand, seven hundred seventy-one".